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mb/google/rex: Disable stage cache 

This patch disables the stage cache to save boot time.

Note: S3 is not POR for Intel MTL mobile skus.

Boot time is reduced by ~8ms.

Boot time before:
   4:end of romstage                1,391,225 (13,724)
 100:start of postcar               1,403,339 (12,114)

Boot time after:
   4:end of romstage                1,380,262 (5,618)
 100:start of postcar               1,392,323 (12,060)

Change-Id: I9775fc628f345a514894f30435a374e2ffa057c1
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71695
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
This commit is contained in:
Subrata Banik 2023-01-06 16:04:09 +05:30
parent 19c35f1a8f
commit 114f87bf2e
1 changed files with 1 additions and 0 deletions
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1
src/mainboard/google/rex/Kconfig
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@ -21,6 +21,7 @@ config BOARD_GOOGLE_REX_COMMON
select HAVE_ACPI_TABLES select HAVE_ACPI_TABLES
select I2C_TPM select I2C_TPM
select INTEL_LPSS_UART_FOR_CONSOLE select INTEL_LPSS_UART_FOR_CONSOLE
select MAINBOARD_DISABLE_STAGE_CACHE
select MAINBOARD_HAS_TPM2 select MAINBOARD_HAS_TPM2
select PMC_IPC_ACPI_INTERFACE select PMC_IPC_ACPI_INTERFACE
select SOC_INTEL_CSE_LITE_SKU select SOC_INTEL_CSE_LITE_SKU